Asked by kathyu

solve by subsitution

2x+y=9
8x+4y=36
Answered by unmeritedfavorr
8x+4y=36

4y=36-8x/4
y=9-8x

2x+y=9
2x+9-8x=9
6x=9-9
x=0


8x+4y=36
8(0)+4y=36
4y=36/4
y=9

(0,9)
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